Userdir support

I would like to ask in what level is there UserDir support in LS (4.0.5), considering we are using exclusively Apache-style (Plesk) vhosts. Declaring the following in /etc/httpd/httpd.conf and visiting http://server ip/~user/info.php gives a 403 forbidden error:

Yes, you are correct but the configuration is inherently flawed (as /var/www/vhosts/*/httpdocs would translate to /var/www/vhosts/user/httpdocs not /var/www/vhosts/domain/httpdocs which is the correct form). So I changed it to simply "httpdocs", as all Plesks's users home directories are their /var/www/vhosts/domain so this shoud translate http://ip/~user to /var/www/vhosts/domain/httpdocs entries BUT it's still a no-go. Debug logging gives me nothing...